Finding the Fourth Proportional to 1,392,787.20, 2,089,366.71 and 551,142.12
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Solution
The fourth proportional to 1,392,787.20, 2,089,366.71 and 551,142.12 is: 826,786.75
Step by Step Solution
- Step 1: Write the proportion equation
1,392,787.20 : 2,089,366.71 = 551,142.12 : x - Step 2: Convert to fraction form
1,392,787.20/2,089,366.71 = 551,142.12/x - Step 3: Cross multiply
1,392,787.20x = 2,089,366.71 × 551,142.12 - Step 4: Simplify right side
1,392,787.20x = 1,151,538,003,775.17 - Step 5: Solve for x
x = 1,151,538,003,775.17/1,392,787.20 - Step 6: Final answer
x = 826,786.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.